CVE-2026-17434

MEDIUMCVSS 6.3/10EPSS 0.21%

Last modified

CVE-2026-17434 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue.

Metrics

CVSS 3.1
6.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS 4.0
2.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.21%

12.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
nanocoaiNanoClaw2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 2.0.20; 2.0.21; 2.0.22; 2.0.23; 2.0.24; 2.0.25; 2.0.26; 2.0.27; 2.0.28; 2.0.29; 2.0.30; 2.0.31; 2.0.32; 2.0.33; 2.0.34; 2.0.35; 2.0.36; 2.0.37; 2.0.38; 2.0.39; 2.0.40; 2.0.41; 2.0.42; 2.0.43; 2.0.44; 2.0.45; 2.0.46; 2.0.47; 2.0.48; 2.0.49; 2.0.50; 2.0.51; 2.0.52; 2.0.53; 2.0.54; 2.0.55; 2.0.56; 2.0.57; 2.0.58; 2.0.59; 2.0.60; 2.0.61; 2.0.62; 2.0.63; 2.0.64

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-17434?
A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue.
How severe is CVE-2026-17434?
CVE-2026-17434 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-17434?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST